United AirlinesUA88% on time
Flights UA1371 06:15 daily · UA4524 08:30 daily · UA6213 11:00 daily · UA4075 14:55 Mo Tu We Th Sa Su
live
Direct flights from St Louis (STL) to Houston (IAH): 32 nonstop departures observed each week across 1 airline. 88% of the last 8 tracked flights arrived within 15 minutes of schedule. The median arrival is 21 minutes early. No cancellations were recorded across the 10 tracked flights. The nonstop covers 1,076 km, an estimated 1 hour 53 minutes in the air. Measured by Pro Flight Search from live flight boards at St Louis and Houston. Updated 4 November 2026 at 16:18 UTC.
Today, STL → IAH
Wed 4 Nov · local times- 06:15 UA1371United Left 06:26 +11 Landed 08:12 −23
- 08:30 UA4524United Left 08:44 +14 IAH est. 10:31In the air · sched 11:01
- 11:00 UA6213United On scheduleT1 IAH 13:24scheduled
- · UA4045 On schedule IAH 20:25scheduled
- · UA4075United On schedule IAH 17:19scheduled
Checked STL board 06:18 · IAH board 09:22
STL
St Louis
smooth · +9
IAH
Houston
smooth · +0
1,076 km · ~1h 53m est.
Runs reliable · 1 airline · 32x weekly · nonstop
88% on time
of the last 8 tracked STL → IAH flights arrived within 15 minutes
Median arrival delay is −21 min. 0 of 10 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival−21 minacross the last 8 arrivals
Flight time~1h 53mestimated from route distance
Weekly departures32x1 direct airline on the leg
Cancelled0.0%recent route rate · 0 of 10
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
United Airlines
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysHistory
operated legs · board outcomes11-03YV4075departed+163
Actual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsWeather lens
Conditions are tightest at STL: a 36% chance of a 15+ minute delay. In this weather, the more delayed of the two airports is typically about +11 min. Both figures come from the two airports' delay records in similar weather. See live delays → · Weather risk by airport →
next sweep in 120s
How the St Louis to Houston route actually runs
Pro Flight Search records official board updates for nonstop STL to IAH flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search: St Louis (STL) to Houston (IAH) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/STL-IAH
STL to IAH questions
Is STL–IAH running on time right now?
Mostly on schedule. The departure side at STL is the weaker end, route health score 74/100. The airports section above carries the live status and delay window at both ends.
Morning or evening flight on STL–IAH?
Operators schedule morning departures around 06:15 and evening departures around 17:55 from STL. Earlier flights typically land before destination-airport delays accumulate later in the day; check the IAH delay card to confirm conditions when you'd arrive.
How long is the flight from STL to IAH?
Great-circle distance is 1,076 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 106–122 min gate-to-gate on this route.
How often does STL–IAH fly?
United Airlines runs the route with about 32 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.
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